October 2019 - Chimera-users - RBVI Mailing Lists

Fw: Open MTZ file
by Williams, Joanne 20 Aug '20

20 Aug '20

Hello! Can you help with the inquiry below? thanks, Jo ________________________________ From: Sharyn Endow, Ph.D. <sharyn.endow(a)duke.edu> Sent: Thursday, February 22, 2018 5:01 AM To: chimera(a)cgl.ucsf.edu Subject: Open MTZ file Is it possible to open an .mtz file in Chimera? ~~~~~~~~~~~~~~~~~~~~~~~~~~ Sharyn A. Endow, PhD Professor of Cell Biology, DUMC Professor of NBD, Duke-NUS PO Box 3709 450 Sands Bldg/Research Drive Durham, NC 27710 USA T 919 684-4311 F 919 681-9929 ~~~~~~~~~~~~~~~~~~~~~~~~~~~

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Fwd: Downloading HIV PDB 3j3q?
by Elaine Meng 13 Jan '20

13 Jan '20

> > From: Divjak Maja <Maja.Divjak(a)petermac.org> > Subject: Downloading HIV PDB 3j3q? > Date: April 1, 2019 at 5:23:39 AM PDT > To: Elaine Meng <meng(a)cgl.ucsf.edu> > > Hi Elaine, > > It's me again! Hope you had a nice weekend... > > I'm having some trouble downloading the HIV capsid file, PDB 3j3q. When I try to import it to Chimera it begins downloading, but the molecule never quite appears, even though it ends up in the entry list. The screen stays blue like it has yet to be uploaded. If I try to upload it from the list, again, nothing appears. I realise the molecule is very large, but I think I'm missing something important here? > > Thanks so much for your help, as always, > > Maja > > Dr Maja Divjak > BAppSc(Hons), PhD, Grad Cert 3D Animation (AFTRS) > Biomedical Animator > Office of Cancer Research > Hi Maja, (forwarding to the address that should be used for for Chimera questions) It is probably just too big for the memory on your computer to open this structure in Chimera. Depending on what you’re trying to do with this capsid, maybe you could try using ChimeraX instead of Chimera. It handles large structures much more efficiently, but it does not have the same set of features as Chimera. <http://www.rbvi.ucsf.edu/chimerax/index.html <http://www.rbvi.ucsf.edu/chimerax/index.html>> If you are just trying to get the atomic coordinates of the entire capsid, they are already in the file(s) you could download directly from the RCSB PDB without using any visualization program. <https://www.rcsb.org/structure/3j3q <https://www.rcsb.org/structure/3j3q>> Best, Elaine ----- Elaine C. Meng, Ph.D. UCSF Chimera(X) team Department of Pharmaceutical Chemistry University of California, San Francisco

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Electrostatic Potential
by Fernando Villa 10 Jan '20

10 Jan '20

Dear all Chimera users In UCSF ChimeraX version 0.91 (2019-08-30) I opened a .pqr file (generated with pdb2pqr in Chimera 1.14) and then I opened a .dx file (generated with APBS in Chimera 1.14) Then I input the commands: >surface >color electrostatic #1 map #2 palette -10,red:0,white:10,blue [image: image.png] Is it possible to calculate the red and blue area in Å2 of the molecule? Best regards, Fernando ATTE Fernando Villa Díaz

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Fetch by EMDB via GUI downloads first where before uncompressing in users downloads directory
by Ryan Harlich 08 Nov '19

08 Nov '19

Hi Chimera, If I fetch by EMDB via GUI and it downloads then decompresses and freezes where did it go? I know when it is done it goes to my download directory, but where does the gz get downloaded to and where does the partial uncompressed file end up. I cannot find ~5-~10 GB of this lost file. It was ~5 GB gz file so I think the gz is still on my computer. I searched for it to and my computer said no results found so I am not sure if it is named something else when you fetch by EMDB. Best, Ryan Harlich Sent from Mail<https://go.microsoft.com/fwlink/?LinkId=550986> for Windows 10

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Atom box
by MARIA CLARA BLANES MIRA 04 Nov '19

04 Nov '19

Dear Chimera experts, I have been measuring surface volumes by using the atom box option in order to obtain a surface slice volume and then the volume measure. But how could I use the atom box in the command line? Thank you! clara import chimera import os from chimera import runCommand runCommand(’sel :2.A,19.A,25.A, 5.B, 23.B, 26.B’) # to define the box runCommand(‘atomBox ????’) runCommand('measure volume #0') runCommand('close all')

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Re: [Chimera-users] Coloring map by curvature
by Tom Goddard 03 Nov '19

03 Nov '19

Hi Shengyou, The curvature.py script was attached to the Chimera mailing list message you found. http://www.cgl.ucsf.edu/pipermail/chimera-users/2014-January/009580.html <http://www.cgl.ucsf.edu/pipermail/chimera-users/2014-January/009580.html> It got renamed with a ".bin" suffix, so after you download you should change the file name to curvature.py. A similar capability is in ChimeraX, the "measure convexity" command https://www.rbvi.ucsf.edu/chimerax/docs/user/commands/measure.html#convexity <https://www.rbvi.ucsf.edu/chimerax/docs/user/commands/measure.html#convexity> Here's an example image using "measure convexity #1" on EMDB 0074. Tom > On Oct 6, 2019, at 7:15 AM, huangsy(a)hust.edu.cn wrote: > > Hi Tom, > > > > I just noticed that you had helped a user about "Coloring EM map by curvature" in UCSF Chimera through some scripts like the following > > open 1grl > > molmap #0 15 grid 2 model #1 > select #1 > open ~/Desktop/curvature.py > Could you please send me the "curvature.py" file or tell me where to download it? > > > Thank you very much for your help! > > Best regards, > > > > Shengyou > > -- > > Shengyou Huang, PhD > > Professor of Biophysics > School of Physics > Huazhong University of Science and Technology > Email: huangsy(a)hust.edu.cn <mailto:huangsy@hust.edu.cn> > Lab web: http://huanglab.phys.hust.edu.cn/ <http://huanglab.phys.hust.edu.cn/>

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Can mouse preferences by set to specific UCSF Chimera function (ex. "Undo Move" under Movement Mouse Mode) ?
by Jun Ha Song 30 Oct '19

30 Oct '19

Dear RBVI, My current project involves modifying market set to better-fit the density map, and I use "*Undo Move*" function of "*Movement Mouse Mode*" window all the time (at least 100 times every hour). Although the "*Undo Move*" is already a godsend for my current project, I have to confess that I find moving my mouse all the way to "*Movement Mouse Mode*" window, then clicking "*Undo Move*" little bit tiring (especially after looking for "Movement Mouse Mode" Window over 10,000 times, at least). I have learned that there is also a way to use Undo Move via Toolbar, but the fact that I need to move my mouse from my model to click the Undo Move button remains the same. I want to ask the following question : "*Can Mouse button (ex. MMB), or a specific custom keyboard key (ex. Pause/Break), be assigned to activate a UCSF Chimera function that requires its button to be physically pressed?*" This is such a minor wish, as it would likely only benefit 1 person, I already feel guilty for asking this. That is why I want to know if mouse button can be assigned to actiavte UCSF Chimera function in general. Best, Junha Song.

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molecular dynamics simulation manual
by AYMAN NAEEM 29 Oct '19

29 Oct '19

Hello I want to use molecular dynamics simulation guideline by using chimera. I will be grateful for your attention. Best regards Ayman Naeem

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electron scattering factors
by Thomas Bick 29 Oct '19

29 Oct '19

Is it possible to create a density map based on a pdb using electron scattering factors rather then a sole gaussian distribution? The molmap command apparently doesn`t have a argument to include scattering factors? Are there maybe different possibilities do that in Chimera? Thanks for the help in advance! Best Thomas Bick

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Pov-Ray functionality
by Brown, Jeffrey 28 Oct '19

28 Oct '19

Hello, I like a lot about ChimeraX; however, I can’t figure out how to export to POV-RAY format. Has this functionality been removed? Although there is a pseudo ray trace function in Chimera X - it is impossible to add scenes like I did in this publication https://journals.plos.org/plosone/article?id=10.1371/journal.pone.0009406 In which I used Chimera to render all of the proteins and then moved them around and added membrane etc. Also there is a lot more control in POV-RAY as it is code that you can’t accidentally rotate with your mouse. Cheers, JWB Jeffrey Wade Brown, M.D., Ph.D. Instructor in Medicine Washington University School of Medicine Department of Gastroenterology 660 South Euclid, Campus Box 8124 St. Louis, MO 63110 Facsimile: (314) 362-3643 Office: (314) 454-8204 Pager: (314) 253-1585 E-Mail: brownjw(a)wustl.edu<mailto:brownjw@wustl.edu> http://independent.academia.edu/JeffreyWadeBrown ________________________________ The materials in this message are private and may contain Protected Healthcare Information or other information of a sensitive nature. If you are not the intended recipient, be advised that any unauthorized use, disclosure, copying or the taking of any action in reliance on the contents of this information is strictly prohibited. If you have received this email in error, please immediately notify the sender via telephone or return mail.

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Chimera-users October 2019